201237528 六、發明說明： 【發明所屬之技術領域】 本發明係關於和彩色濾光片一體化的微膠囊型電泳顯 示板，關於一種彩色電泳方式顯示媒體面板，該面板由將 微膠囊層配置在一組對向電極板間的結構構成，該微膠囊 層藉由在微膠囊中封'有電泳油墨而得到，該一組對向電 極板的其中一個是具有彩色濾光片層的透明基板，由此， 有望提高圖像品質。 【先前技術】 近年來，隨著資訊設備的發展，資訊顯示也具有各種 各樣的形態。作爲可變資訊的顯示板，主流是CRT(陰極射 線管）和使用背光的液晶。但是，CRT和使用背光型的液晶 顯示器等發光型顯示器在長時間使用時，眼睛的負擔大， 看起來疲勞，不適合長時間連續閱讀文書等的用途。 另外，不使用背光的類型的液晶顯示器由於使用偏光 板導致圖像明顯較暗，具有視覺性差的問題。此外，這些 顯示器的顯示圖像沒有記憶性，在停止供應電能的同時， 顯示圖像消失。即使長時間使用，看東西的眼睛也不易疲 勞，視覺性良好，耗電量少，而且具有圖像記憶性的顯示 器。 因此，作爲眼睛的負擔小的反射型顯示裝置，例如專 利文獻1所公開的那樣，提出了一種電泳式顯示板，該顯 示板具有一對的對向電極以及設置在該電極間的電泳式顯 -4- 201237528 示層。該電泳式顯示板和I印刷氏面同彳羨$藉由反射光顯 示文字或圖像’所以對眼睛的負擔少’適合長時間持'續觀 看畫面的作業。 該電泳式顯示板是基於下述原理進行的：在分散帶電 粒子的分散液上施加電壓改變電場，由此使1帶電粒子移 動，可以顯示圖像。電泳式顯示板中’將著色的帶電粒子 封入微膠囊’將微膠囊配置在一對對向電:極間’從而形成 的微膠囊型電泳式顯示板具有"驅動電壓低1 ®柔帛刃性等優 點，可以被實用、進一步被開發。 除了所謂的PDA(便攜資訊終端）或電子書等可以攜帶 的資訊設備的顯示器以外’會在今後進一步普及的是：將 報紙或書、雜誌、海報等印刷品、以及從印表機等輸出到 紙上的硬拷貝向顯示器進行顯示轉換，此時，適用該電泳 式面板。該電泳式面板一般是結構上以白黑顯示爲主的二 色顯示，爲了顯示上述雜誌或彩色印刷品，近年來要求多 種色彩化。 爲了使該電泳式面板多色化，公開了使用兩種以上的 多色電泳粒子，例如在專利文獻2中是藉由照相平版法形 成圖案，在專利文獻3中除了照相平版法以外還使用噴墨 法，將電泳粒子配置在預先確定的像素內的技術。另外， 在專利文獻4中公開了一種顯示板，該顯示板藉由預先形 成收納微膠囊的盒框架，將多個微膠囊準確地設置在所希 望的位置上，從而可以多種顏色顯示。但是，將多種顏色 -5- 201237528 的微膠囊配置在預先確定的像素中的方法與普通的光阻劑 等相比，實際情形是步驟多、複雜，技術困難多。 因此’在專利文獻5中發表了藉由將彩色濾光片基板 貼合到黑白電泳式顯示板上，從而使微膠囊和像素間不需 要位置精度的可以多色顯示的方式。但是，該方式由於在 作爲反射型顯示板的黑白電泳式顯示板上貼合另外製造的 彩色濾光片基板，所以必須在中間插入貼合用的黏合層， 所以其顯示亮度低下，此外由於彩色濾光片基板的貼合困 難’還具有生產性低下這樣的問題。此外，由於濾色層和 電泳層式顯示層間存在距離，所以由於觀看角度不同產生 顏色的視覺差異，導致丟掉了無觀察角度影響這樣的電子 紙的優點。 因此，本發明的發明人發現藉由在彩色濾光片的透明 電極層上直接層疊微膠囊油墨，謀求提高顯示亮度和視 角。但是，如前所述，該電泳式顯示板由於藉由反射光顯 示文字或圖像，光兩次藉由彩色濾光片的著色層，所以提 高反射率成爲重要問題。即，重要的是提高分散了微膠囊 的微膠囊層中，有助於顯示的微膠囊的比例。 先前技術文獻 專利文獻 專利文獻1 日本特公昭50-015115號公報 專利文獻2 日本特開2002_365668號公報 專利文獻3 日本特開2003-156770號公報 201237528 專利文獻4 日本特開2003-295234號公報 專利文獻5 日本特開2003-161964號公報 【發明內容】 本發明是根據上述問題所提出的，課題在於提供一種 彩色電泳方式的顯示媒體面板，該面板在多色顯示的微膠 囊型電泳方式的顯示媒體面板中，顯示亮度優異，改善了 視角狹窄化的問題，而且顯示質量均質性也優異。 本發明的發明人對上述問題進行認真的硏究，從而發 現藉由在觀看側的透明基板上設置的彩色濾光片層上的透 明電極層上直接層疊微膠囊油墨，可謀求提高顯示亮度和 視角，此外，藉由調整形成的微膠囊層的微膠囊的粒徑分 佈爲一定範圍，可以得到白反射率高、濃度不均少，從而 有望提高畫質的多色顯示板，進而完成本發明。 即，根據本發明的申請專利範圍第1項的發明是—種 彩色電泳方式的顯示媒體面板，該面板是以透明基板 '彩 色濾光片層、透明電極層、微膠囊層、黏結劑層、背面電 極板的順序層疊構成的多色顯示板，前述微膠囊層直接層 疊在前述透明電極層上，前述微膠囊層是將微膠囊分散到 黏著劑樹脂中構成的，前述微膠囊封入了在透明分散介質 中分散電泳粒子而得到的分散液，藉由施加電壓而產生的 電場改變來改變光學的反射性質，前述背面電極板是在基 材上配置像素電極而形成的電極板，其特徵在於’在從觀 看側觀察前述微膠囊層中的微膠囊的粒徑的狀態下’將任 201237528 意的方向的平均粒徑定義爲X，將和其正交的方向的平均 粒徑定義爲Y時’具有以下分佈。 平均粒徑以X = 35〜45μιη計，在粒徑Χι(Χ-2〇μπ〇以上 且粒徑Χ2(Χ + 2〇μιη)以下的微膠囊的比例數量佔據80%以 上，而且不足粒徑Χι(Χ-20μιη)的微膠囊數量不足20%’超 過粒徑Χ2(Χ + 20μιη)的微膠囊數量不足5%。 另外，平均粒徑以Υ = 35〜45μιη計，在粒徑Yi(Y-2〇Pm) 以上且粒徑Υ2(Υ + 20μηχ)以下的微膠囊的比例數量佔據80% 以上，而且不足粒徑YjYdOpm)的微膠囊數量不足20%’ 超過粒徑Υ2(Υ + 20μιη)的微膠囊數量不足5%。 另外，本發明的申請專利範圍第2項的發明是根據第 1項所記載的彩色電泳方式的顯示媒體面板’其特徵在於’ 前述電泳粒子是具有兩種不同表面電荷的粒子’其中一種 是著色粒子，另一種是白色粒子。 另外，本發明的申請專利範.圍第3項的發明是根據第 1項所記載的彩色電泳方式的顯示媒體面板’其特徵在於’ 前述彩色濾光片層的膜厚在0_5~2·0μιη的範圍內’顯示畫 面內的像素間和像素內的級差（膜厚差）是0 · 3 以內’鄰 接的各像素之間沒有重疊，而且各像素的頂部邊緣離開像 素邊界5.0μηι以內》 接著，本發明的申請專利範圍第4項的發明是根據第 1項所記載的彩色電泳方式的顯示媒體面板’其特徵在於’ 在從顯示板的剖面方向觀察前述微膠囊層的狀態下’前述 -8 - 201237528 微膠囊層的厚度是和前述平均粒徑X或前述平均粒徑Y同 等或其以下的厚度，而且是0.8乂，或0.8Υ,以上的厚度。 發明效果 在微膠囊型電泳方式的顯示媒體面板中，藉由在觀看 側的透明電極層側大量密合微膠囊的表面，也就是反射 面，從而使亮度、畫質更好。在本發明的彩色電泳方式的 顯示媒體面板中，藉由在平滑性高的彩色濾光片層上所具 有的透明電極層上直接形成微膠囊層，微膠囊容易均勻地 塗布，而且作爲顯示表面的微膠囊層和彩色濾光片層的距 離非常接近地配置，可以得到畫像質量提高的多色顯示 板。另外，得到顏色少濃度不均勻的多色顯示板，該顔色 濃度不均是由於在反射型，光二次藉由產生的由彩色濾光 片層的膜厚差引起。 另外，在本發明的彩色電泳方式的顯示媒體面板中， 藉由使微膠囊層中的微膠囊的粒徑形成上述特定範圍的粒 度分佈，可以得到微膠囊油墨的塗布適應性良好、少不均 勻的塗布膜。此外，藉由在黏著劑樹脂中懸浮的狀態或者 沉積在黏結劑層側的多狀態，與透明電極層離開距離的情 況少，大多數的微膠囊的反射面密合在觀看側的透明電極 層側，所以和上述彩色濾光片的平滑性一致，在顯示畫面 內和各像素內沒有不均勻，以高的反射率提高顯示亮度， 可得到優異的顯示顏色。 201237528 另外，在本發明的彩色電泳方式的 微膠囊層的厚度是和平均粒徑X或平均 以下，而且是O.sx,· O.SYi以上。也就 厚度方向上以某種程度被壓碎，鄰接的 合的狀態的同時，小的微膠囊之間沒有 由於電泳粒子的移動距離均勻，所以對 的電場變化的驅動、應答性也優異，提; 另外，和貼合另外製造的彩色濾光 有的顯示板相比，在本發明的結構中， 濾光片層之間不存在黏結劑等不必要的 射的反射光藉由最低限度的層，顯示亮 示板更高。此外，關於由於彩色濾光片 離分開而觀察到的微膠囊層的顯示和彩 差，也是藉由使微膠囊接近彩色濾光片 到前述這種視覺差，沒有引起視角的狹 【實施方式】 對本發明的彩色電泳方式的顯示媒 個實施形態如下詳細說明。 第1圖是藉由剖面說明本發明的一 電泳方式的顯示媒體面板的結構例的槪 由其放大的剖面進行說明的模式圖。如 示，本發明的彩色電泳方式的顯示媒體 (1)、彩色濾光片層（2)、透明電極層（4)、 顯示媒體面板中， 粒徑Y同等或者其 是，大的微膠囊在 微膠囊之間在呈密 重疊、干擾，而且 由施加電壓而產生 高了顯示性能。 片基板而形成的現 在微膠囊層和彩色 層，由微膠囊層反 度比前述現有的顯 層和微膠囊層的距 色濾光片的顏色偏 層，從而沒有觀察 窄。 體面板，基於其一 個實施形態的彩色 略圖，第2圖是藉 第1圖和第2圖所 面板是以透明基板 微膠囊層（10)、黏 -10- 201237528 結劑層（16)、背面電極板（4〇)的順序層疊構成的顯示板，微 膠囊層（10)直接層疊在透明電極層（4)上，微膠囊層（1〇)是 將微膠囊（5)分散到黏著劑樹脂（11)中形成的，微膠囊（5)封 入了分散液，該分散液是在透明分散介質8中分散著色粒 子（6)和白色粒子（7)的電泳粒子而得到的，該微膠囊藉由施 加電壓產生的電場改變，改變光學的反射性質，背面電極 板（40)是在背面基材（50)上配置像素電極（30)構成的。 另外，雖然沒有圖示，但是根據需要，可以在微膠囊 層（10)上設置用於減少微膠囊（5)的凹凸的只外塗了黏著劑 樹脂的表面平滑層。 作爲透明基板1，可以使用鹼石灰玻璃、低鹼硼矽酸 鹽玻璃、無鹼硼矽酸鋁玻璃等玻璃板、以及聚對苯二甲酸 乙二酯（PET)和聚碳酸酯、聚醯亞胺、聚萘二甲酸乙二酯、 聚醚颯、丙烯酸樹脂、聚氯乙烯等的樹脂板、膜或片。 在本發明的彩色電泳方式的顯示媒體面板中，彩色濾 光片層（2)的平面圖形形狀沒有特別的限定，可以適當使用 合適的形狀，例如將微細帶（條紋）狀的濾光片段（filter segment)平行或交叉配置地構成，或者將微細的濾光片段 縱橫一定的陣列配置地構成。例如，並不限於如第5圖所 示的大量使用組合了 RGBW的像素結構。本發明中使用的 彩色濾光片層（2)中設置多個著色圖案，圖像區域分別配置 著色像素。著色像素是在每個像素上將透射光著色，一般 配列相當於光的三原色的紅色（R)、綠色（G)、藍色（B)這三 201237528 種顏色’或者黃色（Υ)、品紅（Μ)、青色（c)的3原色的著色 像素。另外’此處’ W是光隔板等中使用的透明樹脂，爲 了利用更多反射光、提高亮度，和著色像素組合採用，在 構成本發明的彩色電泳方式的顯示媒體面板的彩色濾光片 層中’不使用普通的黑色矩陣（black matrix)。 在本發明的彩色電泳方式的顯示媒體面板中，彩色濾 光片層（2)的剖面形狀如第4圖所示，根據微膠囊油墨的塗 布適應性和圖像顯示性質調整爲一定的形狀。彩色濾光片 層的膜厚爲0.5〜2.0μιη，較佳爲0.7〜1·3μηι的範圍。在本發 明的多色顯‘示板中，由於光兩次藉由彩色濾光片層，所以 爲了確保亮度，使用比透過型的透過率更高的顏色性質的 著色樹脂。在膜厚不足0.5μηι時，無法均衡地選擇必要的 著色濃度以及對透明基板的黏合性。另外，在膜厚超過 2·0μηι時，具有無法抑制顯影等中膜厚變化的問題。 顯示畫面內的像素間和像素內的級差（膜厚差）爲 0·3μηι以內，較佳爲Ο.ΐμπι。如果像素間的級差超過〇.3μιη， 則確認有顔色濃度差，或者在微膠囊油墨的塗布面上產生 起伏樣的不均勻，可能影響圖像顯示。該膜厚差可以藉由 抗蝕劑油墨的組成、曝光條件以及顯影條件等控制。 另外，在使用背光的液晶顯示板用彩色濾光片中，爲 了提高對比度，避免混色，各像素圖案間使用黑色矩陣 (ΒΜ)，另外，在不使用ΒΜ時，爲了避免漏光，也使鄰接 的像素之間重疊。因此，像素的邊緣突起，在其高度超過 -12- 201237528 〇.3μπι時，微膠囊油墨產生偏差，影響塗布面的均勻性。 因此，對本發明的彩色濾光片而言，像素之間不重疊。如 第4圖所示’各像素最終的最終剖面形狀通常爲梯形，鄰 接的各像素之間是藉由底部邊緣接觸或略微偏離的狀態而 不重疊，而且’梯形的各像素的頂部邊緣離開像素邊界爲 5 · 0 μηι以內，較佳爲3 · 5 μιη以內。藉由形成這種剖面形狀， 可以獲得下述這樣的顯示板：像素沒有突起、微膠囊油墨 沒有偏向地塗布，同時可以抑制能夠看到表面曲折的圖像 不均的產生，而且反射光的利用效率良好、亮度高。 該彩色濾光片層的製造，一般將在感光性樹脂上分散 混入顏料或染料等著色劑形成的著色感光性樹脂或透明的 感光性樹脂，藉由旋塗法或無旋塗布法，在玻璃基板上塗 布爲均勻的厚度，乾燥除去剩餘的溶劑後，藉由照相平版 法，對該抗蝕膜藉由所希望形狀的光罩，藉由鄰近曝光（接 近曝光）等，使用超高壓水銀燈照射活性能量線，固化（負 型）或提高鹼溶解度（正型），除去甩鹼溶液等溶解的部分， 由此進行顯影、後烘焙，重複進行必要數量的這種操作。 另外，在本發明中，並非特別限定爲上述製造方法。 然後，在彩色濾光片層（2)上根據需要將表面硏磨、平 整化後，設置透明電極層（4)。可以作爲透明電極材料而使 用的材料，例如是ΙΤΟ等氧化銦系、氧化錫系、氧化鋅系 這樣的具有透明性的導電性氧化物等。該透明電極可以使 用蒸鍍法、濺鍍法、CVD法等現有技術形成。 -13- 201237528 以下’對帶微膠囊的彩色濾光片的顯示原理進行槪要 描述’該帶微膠囊的彩色濾光片構成本發明的彩色電泳方 式的顯示媒體面板。 如第2圖所示，背面基材（50)上的像素電極（30)連接各 個像素電極的開關元件（未表示），可以在其和透明電極層（4) 之間施加正負的電壓。爲了顯示圖像，通常，像素電極（3 0) 連接有源矩陣型驅動方式的電路結構的電源。如果在像素 電極（30)上施加電壓，則施加在微膠囊層（1〇)上的電場變 化。在像素電極（30)爲正極時，微膠囊（5)內的帶負電的粒 子往背面的像素電極（30)側移動，帶正電的粒子移動到前 面的透明電極層（4)側。同樣地，如果像素電極（30)爲負極， 則帶正電的粒子移動到像素電極側，帶負電的粒子往透明 電極層（4)側移動。這裏，例如假設黑色粒子帶正電，白色 粒子帶負電’則顯示顔色是往前面的透明電極層（4)側移動 的粒子的顏色，來自觀察側的光在其上反射，反射光藉由 對向的彩色濾光片層的著色圖案，可以帶顏色地顯示所希 望的文字或圖像。 接著’進一步說明本發明的彩色電泳方式的顯示媒體 面板所使用的材料、構件。 帶微膠囊的彩色濾光片形成時使用的微膠囊（5)由著 色f立子（6)、白色粒子（7)、透明分散介質（8)和微膠囊殻（9) 構成。 -14- 201237528 一般來說，微膠囊型電泳式顯示板中使用的微膠囊藉 由篩分法或比重分離法等精製’平均粒徑是3〇〜100 μπι，此 外，相對於膠囊的平均粒徑’具有前後1 〇 μ«ι以內的粒徑 的微膠囊的比例至少超過50%。 在本發明的電泳方式的顯示媒體面板中，如第3(a)圖 所示，在從觀看側觀察微膠囊層中的微膠囊的粒徑的狀態 下，將任意方向的平均粒徑1定義爲X，將和其正交的方 向的平均粒徑2定義爲Υ時，如第3(b)圖所表示的這種狀 態的1個例子所示，製成具有以下的粒度分佈。也就是’ 平均粒徑以 Χ = 35~45μιη計，粒徑 XJXdOpm)以上~粒徑 Χ2(Χ + 20μιη)以下的微膠囊的比例數量佔據80%以上，而且 不足粒徑Χ^Χ^Ομιη)的微膠囊的數量不足20%’超過粒徑 Χ2(Χ + 20μιη)的微膠囊的數量不足5%。另外’平均粒徑以 Υ = 35 〜45μιη 計，粒徑 ΥΚΥ^Ομηι)以上〜粒徑 Υ2(Υ + 20μηα) 以下的微膠囊的比例數量佔據80%以上’而且不足粒徑 YjYdOpm)的微膠囊的數量不足 20% ’超過粒徑 丫2(丫 + 20卜!11)的微膠囊的數量不足3%。上述粒度分佈是從觀 看側觀察面板的狀態，從橫方向看到的微膠囊層中的微膠 囊是在上下方向上，形成略微壓變形的橢圓形。 微膠囊分散液使用醇等水系溶劑，如果沒有特別的問 題，使用水。 作爲分散介質（8)從可以使帶電粒子良好、穩定地帶電 的絕緣性液體，也就是實質上不溶於水的有機溶劑中選 -15- 201237528 擇。例如可以列舉出十二烷醇、十一烷醇等長鏈醇系溶劑， 二丁基酮、甲基異丁基酮等多碳酮類，戊烷、己烷、辛烷 等脂肪烴，環己烷、甲基環己烷等脂環烴，苯、甲苯、二 甲苯、己基苯、丁基苯、辛基苯、壬基苯、癸基苯、十一 烷基苯、十二烷基苯、十三烷基苯、十四烷基苯等具有長 鏈烷基的苯類等芳烴，二氯甲烷、氯仿、四氯化碳、1，2-二氯乙烷等鹵代烴以及矽油、橄欖油等各種油類的任一種 單一成分或者它們的混合物。 作爲著色粒子（6)的黑色電泳粒子中，除了苯胺黑、碳 黑等黑色顏料以外，還可以使用玻璃或樹脂等的微粉末、 以及它們的複合體等。另外，在藉由彩色濾光片進行多色 顯示的本發明的多色顯示板中，通常使用碳黑的黑色粒 子。另外，作爲白色粒子（7)的白色電泳粒子使用習知的氧 化鈦、二氧化矽、氧化鋁、氧化鋅等白色無機顏料，乙酸 乙烯酯乳狀液等有機化合物以及它們的複合體等。 另外，著色粒子（6)和白色粒子（7)根據需要可以藉由使 用各種表面活性劑、分散劑、有機和無機化合物、金屬等 處理粒子的表面，不僅可以賦予所希望的表面電荷，而且 可以提高透明分散介質（8)中的分散穩定性。 將著色粒子（6)和白色粒子（7)分散到透明分散介質（8) 中的分散液A使用混合凝聚法等相分離法、表面聚合法、 原位聚合（in-situ)法、溶解分散冷卻法等習知的方法封入微 膠囊中。微膠囊的殼（9)例如是橡膠或明膠等具有彈性且能 -16- 201237528 夠適應必要的變形的具有柔韌性的膜。作爲形成微膠囊的 材料’較佳爲充分透過光的材料，具體地，可以列舉出尿 素-甲醛樹脂、三聚氰胺-甲醛樹脂、聚酯樹脂、聚胺基甲 酸酯樹脂、聚乙烯樹脂、聚苯乙烯樹脂、聚醯胺樹脂、丙 烯酸酯樹脂、甲基丙烯酸酯樹脂、醋酸乙烯酯樹脂、橡膠、 明膠等。它們可以單獨或混合兩種以上使用。 分散調整了粒徑分佈的微膠囊的微膠囊分散液中，混 合增稠劑、表面活性劑和黏著劑樹脂（11)等，調配微膠囊 油墨。在微膠囊油墨的黏著劑樹脂（11)中，使用聚乳酸、 酚醛樹脂、聚丙烯樹脂、丙烯酸樹脂、聚胺基甲酸酯樹脂 等介電體樹脂。 微膠囊層（10)如前所述，將前述微膠囊油墨在預先設 置了彩色濾光片層（2)、透明電極層（4)的由玻璃基板或樹脂 基板形成的透明基板（1)的透明電極層（4)上直接塗布形 成。塗布使用絲網印刷方式、微凹版塗布器 '接觸輥塗覆 機、逗號塗布器、狹縫式塗布機、棒塗布器、簾式塗布器 等塗布裝置進行，在本發明中，可以較佳使用縫模塗布機。 像上述這樣形成的微膠囊層（10)由於表面一般具有凹 凸，所以難以使夾住微膠囊的電極間的距離一定。因此， 較佳爲在微膠囊層（10)上塗布表面平滑化油墨，形成表面 平滑層。藉由形成該表面平滑層，可以將黏結劑直接塗布 在表面平滑層上。這可以避免，如果沒有表面平滑層，直 接塗布黏結劑，在微膠囊層（1 0)上具有針孔等未塗布的位 201237528 置，則黏結劑直接接觸彩色濾光片側的透明電極層（4)，介 電常數會變化，難以在微膠囊上施加電壓，結果顯示不明 確》 表面平滑化油墨是在溶劑中分散作爲黏著劑的樹脂形 成者。作爲黏著劑成分較佳爲和微膠囊油墨中使用的黏著 劑樹脂成分或黏結劑層中使用的黏著劑成分介電常數相同 的樹脂。特別是，和微膠囊油墨、黏結劑層中使用的黏著 劑樹脂成分相同，而且和表面平滑化油墨的黏著劑樹脂成 分也相同者爲最佳。如果使用介電常數不同的樹脂，則在 電極間層疊介電常數不同的樹脂，而且各樹脂的厚度根據 在該部分所具有的微膠囊的尺寸，形成不同的狀態。於是， 由於各樹脂的介電常數的不同，施加在微膠囊上的電壓難 以在全部畫面區域是均句的。 作爲表面平滑化油墨的溶劑可以使用微膠囊油墨中使 用的物質，也可以使用其他醇等水性溶劑。表面平滑化油 墨的塗布使用簾式塗布器、縫模塗布機等塗布裝置塗布。 刮刀塗布等切斷塗布液的塗布方式由於使微膠囊層內的微 膠囊破裂，所以不能使用。 表面平滑層的厚度較佳爲1〇~30μιη。在ΙΟμιη以下時， 微膠囊表面的凹凸不平滑。另一方面，在30μηι以上時， 電極間距離寬，成爲驅動電壓升高的原因。 如上形成表面平滑層，使溶劑充分蒸發，從而形成帶 微膠囊的彩色濾光片。藉由將黏著劑層夾設於該帶微膠囊 -18- 201237528 的彩色濾光片和在背面基材配置像素電極的背面電 間，使彩色濾光片的著色圖案（像素）和背面電極的 極位置一邊重合地貼合，一邊進行層疊，從而完成 的彩色電泳方式的顯示媒體面板。 可以作爲黏著劑使用的物質較佳爲聚胺基甲酸 著劑、丙烯酸樹脂系黏著劑等合成樹脂系黏著劑。 使用高介電體樹脂的黏著劑。 黏著劑還可以直接塗布到上述微膠囊層或像 上，在本發明的製造方法中，較佳在矽膜和樹脂基 成導電層的樹脂剝離基板上，塗布使用了和前述微 墨中使用的黏著劑樹脂同樣成分的黏結劑，形成黏 使用。藉由使用和微膠囊油墨中使用的黏著劑樹脂 分的黏結劑’可以舉出下述優點：提高樹脂介面的箱 難以產生剝離’而且由於介電常數類似，所以施加 囊上的電壓容易在面內一定。 另外，藉由使用在矽膜和樹脂基板間形成導電 脂剝離基板’可以在帶微膠囊的彩色濾光片上層疊 結劑片而形成多層基板，即彩色濾光片電泳顯示方 面板進行驅動評價、質量確認。另外，此處的導電 不需要透明性’所以可以是蒸鍍、電沉積形成銅、 屬的薄膜、以及塗布形成導電性聚合物的膜。 極板之 像素電 本發明 酯系黏 特佳爲 素電極 板間形 膠囊油 結劑片 同樣成 丨和性， 在微膠 層的樹 上述黏 式的前 層由於 鋁等金 •19- 201237528 [實施例] 以下’對本發明的具體實施例進行說明。 <實施例1 > 將用聚乙烯樹脂覆蓋表面的平均粒徑3μιη的氧化 末（白色粒子）和藉由氯化烷基三甲基銨表面處理的平 徑4μηι的碳黑粉末（黑色粒子）在透明分散介質四氯乙 分散’得到分散液Α。在這種情況下，白色粒子帶負 黑色粒子帶正電。 接著’在水中溶解明膠和聚苯乙烯磺酸鈉，製備 液，和分散液A混合，將液溫調整到40°C後，一邊保 溫，一邊藉由均化器攪拌，得到Ο/W乳狀液。 接著’將得到的0/W乳狀液和在水中溶解了阿拉 膠的水溶液，使用分散器在40 °C下混合，一邊將液溫 在40°C，一邊使用醋酸，將溶液的pH調整爲4，藉由 凝聚法形成以明膠-阿拉伯樹膠爲殼材的微膠囊。 然後’將液溫降低到5 °C後，加入3 7質量％福馬 液’使微膠囊殼的壁材固化，得到封入了分散白色粒 化鈦粒子）和黑色粒子（碳黑粒子）的分散液A的微膠饔 篩分這樣得到的微膠囊，使粒徑大小一致，以使 粒徑以40μιη計，從粒徑20μιη以上到粒徑60μπι以下 例數量是80%，不足20μηι的粒徑的微膠囊的比例 20%，60μιη以上的粒徑的微膠囊的比例不足5%。 鈦粉 均粒 烯中 電， 水溶 持液 伯樹 維持 複合 林溶 子（氧 卜 平均 ‘的比 不足 -20- 201237528 接著，以上述粒徑大小一致的微膠囊爲固體成分’調 整固體成分4〇質量％的微膠囊的水分散液。將該水分散 液、固體成分 25質量％的聚胺基甲酸醋系黏著劑 (C P - 7 0 5 0、DIC股份有限公司製造）、表面活性劑、增稠劑 和純水混合，製造微膠囊油墨° 另一方面，藉由以下方法製造彩色濾光片。此處所述 的份全部是質量份。首先’以環己酮爲溶劑，使50份甲基 丙烯酸丁酯、20份甲基丙烯酸甲酯、30份丙烯酸共聚，製 造丙烯酸樹脂。 對該丙烯酸樹脂25份，以溶劑爲47份的比例，製造 丙烯酸樹脂溶液，在其中混合20份紅色顏料（Pigment Red 2 2) ’藉由珠磨分散1小時。之後，再藉由分散器混合作爲 感光性單體的4份二季戊四醇、4份六丙烯酸酯和作爲光 聚合引發劑的0.3份二（2,4,6-三甲基苯甲醯基）-苯基膦氧 化物，製備紅色光阻材料。 將該紅色光阻材料旋塗到縱400mmx橫320mni'厚度 0.7mm的透明玻璃基板上，在常溫下放置5分鐘，使膜表 面平滑後，在70°C下乾燥20分鐘，形成紅色的光阻層。 然後’在該紅色光阻層上如第5(b)圖所示形成6面顯 示畫面是縱97.28mmx橫128.08mm的6型顯示板，如第5(a) 圖所示’將對應於子像素尺寸爲151μηιχ153μιη、由RGBW 構成的像素尺寸是302μηι><306μιτι的像素縱橫重複得到的圖 案的光罩’設置在紅色曝光的位置，藉由超高壓水銀燈， -2 1- 201237528 以曝光量150m】/cm2的條件密合曝光。曝光後，以噴出壓 力1 Kg/cm2噴出霧狀的溫度20°C的1 %碳酸鈉水溶液，進 行20秒鐘噴霧顯影，除去未曝光部位，露出玻璃基板。將 顯影處理後的玻璃基板乾燥後，在2 3 0 °C下加熱1小時， 由此進行固膜處理，得到膜厚1 . 1 μ m的紅色圖案。 接著，在形成該紅色圖案的玻璃基板上，使用綠色顏 料（Pigment Green7)作爲顏色材料’和前述紅色光阻劑同樣 組成地製造綠色光阻材料，使用該材料形成綠色光阻層。 然後，將和前述同樣的光罩移動設置在形成綠色圖案的位 置上，以曝光量200mJ/cm2的條件密合曝光。曝光後，以 噴出壓力IKg/cm2噴出霧狀的溫度20°C的1%碳酸鈉水溶 液，進行3 0秒鐘噴霧顯影，除去未曝光部位，露出玻璃基 板。將顯影處理後的玻璃基板乾燥後，和前述同樣地，在 230°C下加熱1小時，進行固膜處理，得到膜厚1.2μπι的綠 色圖案。 然後，和則述同樣地Μ吏用藍色顏料（Pigment Blue 15:6) 作爲顏色材料，使用藍色光阻材料形成藍色光阻層。然後， 將和前述同樣的光罩移動設置在形成藍色圖案的位置上， 密合曝光，進行顯影，除去未曝光的部位，露出玻璃基板。 將顯影處理後的玻璃基板乾燥後，和前述同樣地，在230 °C下加熱1小時，進行固膜處理，得到膜厚1 · 1 μ m的藍色 圖案。 -22- 201237528 接著’使用僅除去了著色顏料的感光性丙烯酸樹脂， 進行和上述同樣的操作，得到膜厚1 . 1 μ m的W (透明）圖案。 RGB W各個子像素是膜厚差最大爲Ο.ΐμπι，鄰接的各像素 之間沒有重疊’而且以底部邊緣接觸的形式形成，即使是 分開的情況下，最大分開Ι.Ομιη以下。另外，頂部邊緣都 是離開像素邊界3·5μιη以內。 像這樣，得到下述基板：在玻璃基板上形成6面顯示 畫面爲縱97.28mmx橫l28.08mm的6型面板，形成具有子 像素大小 151μιηχ153μιη、由 RGBW構成的像素大小是 302μιη><3()6μιη的圖案的彩色濾光片層。接著，不進行硏磨 處理和外塗，在該彩色濾光片層和露出的玻璃基板的整面 上，藉由濺鏟法形成厚度1 5 Onm的由ΙΤΟ形成的透明電極 層。 接著，使用縫模塗布機，將前述微膠囊油墨直接塗布 到形成前述彩色濾光片層的透明玻璃基板上的透明電極層 上。塗布是藉由擠壓模具形成爲微膠囊層的厚度是40 μιη， 微膠囊之間沒有重合，粒徑大的微膠囊壓入微膠囊層的狀 態進行的。塗布後，在6 0 °C下乾燥1 〇分鐘，得到帶微膠 囊的彩色濾光片。 然後，在上述的帶微膠囊的彩色濾光片的微膠囊層 上，使用縫模塗布機，重疊塗布固體成分25質量％的聚胺 基甲酸酯系黏著劑（CP-705 0，DIC股份有限公司製造）作爲 表面平滑化用油墨，進行乾燥，得到ΙΟμιη厚的帶有表面 平滑層的帶微膠囊彩色濾光片。 -23- 201237528 另外，在聚對苯二甲酸乙二酯片的一面上作爲 蒸鍍lOOnm厚的鋁，然後，在其上設置了矽系剝離 在得到的50μιη厚的聚對苯二甲酸乙二酯片的剝離 側，塗布25μιη厚的聚酯-聚胺基甲酸酯系黏結劑， 結劑片。 接著，在上述帶表面平滑層的帶微膠囊的彩色 上，貼合上述黏合片，得到帶有6面的6型顯示畫 色濾光片電泳顯示方式前面板。在該狀態下，在透 層和導電層施加電壓，進行微膠囊層的驅動確認。 接著，對該彩色濾光片電泳顯示方式前面板， 酯-聚胺基甲酸酯系黏結劑的黏結劑層，剝離設置了 離塗層的50 μπι厚的聚對苯二甲酸乙二酯片，在彩 片的定位標記上重合，在對應於彩色濾光片的6型 6面的背面電極板的像素電極面，以0.5 0ΜΡ的壓力 然後，將6面的顯示畫面分別成片，得到本發明的 泳方式的顯示媒體面板，該背面電極板在作爲TFT 玻璃基板上具有由ITO構成的像素電極，該ITO爲 膜電晶體形成的有源矩陣型驅動方式的電路結構的 在製造的實施例1的各顯示板上，由標準電壓 生裝置（橫河電機股份有限公司製造），在前面的透 和背面的像素電極間施加約± 1 5 V的電壓，評價實際 質。另外，使用色彩色差計CR-400(KonicaMinolta 導電層 塗層， 塗布面 調製黏 濾光片 面的彩 明電極 留下聚 矽系剝 色濾光 的帶有 貼合， 彩色電 基板的 使用薄 ITO。 電流產 明電極 顯示性 公司製 -24- 201237528 造）’測定彩色顯示時（白色顯示時）和黑色顯示時的反射 率’以對比度=彩色時（白色時）反射率/黑色時的反射率評價 對比度。此外’藉由相同裝置測定視覺亮度L *。 結果是，實施例1的顯示板是6個顯示板的白反射率 闻達23%’亮度高，可以藉由和單色同等的ΐ2:ι的優異的 對比度比實現多色顯示。沒有檢測出微膠囊油墨的塗布不 均而引起的圖像不均以及6個面板間的顏色濃度不同。此 外’任一個顯示板在正面和橫向觀察時都沒有顔色不齊， 還可以改善視覺角度導致的顏色視差，作爲電子紙可以優 異地顯示顏色。 【圖式簡單說明】 第1圖藉由剖面說明本發明的彩色電泳方式的顯示媒 體面板的一個實施形態的結構簡圖。 第2圖藉由放大的剖面說明本發明的彩色電泳方式的 顯示媒體面板的一個實施形態的結構模式圖。 第3(a)、（b)圖本發明的微膠囊層中的微膠囊的粒徑的 粒度分佈說明圖。 第4圖構成本發明的彩色電泳方式的顯示媒體面板的 彩色濾光片的一個例子的放大剖面的模式圖。 第5(a)、（b)圖構成本發明的彩色電泳方.式的顯示媒體 面板的彩色濾光片的一個實施例的放大平面說明圖。 -25- 201237528 【主要元件符號說明】 1 透 明 基 板 2 彩 色 濾 光 片 層 4 透 明 電 極 層 5 微 膠 囊 6 著 色 企丄 子 7 白 色 业丄 子 8 透 明 分 散 介 質 9 微 膠 囊 殼 10 微 膠 囊 層 11 黏 結 劑 樹 脂 16 黏 結 劑 層 3 0 像 素 電 極 50 背 面 基 材 -26201237528 VI. Description of the Invention: [Technical Field] The present invention relates to a microcapsule type electrophoretic display panel integrated with a color filter, relating to a color electrophoresis display medium panel, wherein the panel is provided with a microcapsule layer a structure of a pair of opposed electrode plates obtained by sealing an electrophoretic ink in a microcapsule, one of the pair of counter electrode plates being a transparent substrate having a color filter layer, Therefore, it is expected to improve the image quality. [Prior Art] In recent years, with the development of information equipment, information display has various forms. As a display panel for variable information, the mainstream is a CRT (Cathode Ray Tube) and a liquid crystal using a backlight. However, when a CRT or a light-emitting display such as a backlit liquid crystal display is used for a long period of time, the burden on the eyes is large and it seems to be fatigued, and it is not suitable for applications such as continuous reading of documents for a long time. In addition, a liquid crystal display of a type that does not use a backlight causes a problem that the image is significantly dark due to the use of a polarizing plate, and has a problem of poor visibility. In addition, the display images of these displays have no memory, and the display image disappears while the supply of power is stopped. Even if you use it for a long time, your eyes will not be tired, your vision will be good, your power consumption will be low, and you will have an image memory. Therefore, as a reflective display device having a small burden on the eyes, for example, as disclosed in Patent Document 1, an electrophoretic display panel having a pair of counter electrodes and an electrophoretic display provided between the electrodes is proposed. -4- 201237528 Display layer. The electrophoretic display panel and the I-printed panel are the same as the one that displays the characters or images by reflected light, so that the burden on the eyes is small, and it is suitable for the operation of continuing the viewing of the screen for a long time. The electrophoretic display panel is based on the principle that a voltage is applied to a dispersion of dispersed charged particles to change an electric field, whereby one charged particle is moved to display an image. In the electrophoretic display panel, 'the colored charged particles are enclosed in microcapsules'. The microcapsule-type electrophoretic display panel formed by disposing the microcapsules in a pair of opposite electric: poles has a driving voltage low 1 ® soft edge Advantages such as sex can be applied and further developed. In addition to the so-called PDA (portable information terminal) or the display of portable information devices such as e-books, it will be further popular in the future: printing newspapers, books, magazines, posters, etc., and printing from printers to paper. The hard copy is converted to display on the display. At this time, the electrophoretic panel is applied. The electrophoretic panel is generally a two-color display mainly composed of white and black display, and in order to display the above magazine or color print, a plurality of colors have been required in recent years. In order to multicolor the electrophoretic panel, it is disclosed to use two or more kinds of multicolor electrophoretic particles. For example, in Patent Document 2, a pattern is formed by photolithography, and in Patent Document 3, a photojet method is used in addition to the photolithography method. Ink method, a technique in which electrophoretic particles are arranged in predetermined pixels. Further, Patent Document 4 discloses a display panel which can display a plurality of colors in a plurality of colors by accurately forming a plurality of microcapsules at a desired position by previously forming a cartridge frame for accommodating the microcapsules. However, the method of arranging the microcapsules of the plurality of colors -5 - 201237528 in predetermined pixels is more complicated, more technically difficult than the conventional photoresist or the like. Therefore, Patent Document 5 discloses a method in which a color filter substrate is bonded to a black-and-white electrophoretic display panel so that micro-capsules and pixels can be displayed in a multi-color without requiring positional accuracy. However, in this method, since a separately manufactured color filter substrate is bonded to a black-and-white electrophoretic display panel as a reflective display panel, it is necessary to insert an adhesive layer for bonding in the middle, so that the display brightness is low, and The difficulty in bonding the filter substrate 'has a problem of low productivity. In addition, since there is a distance between the color filter layer and the electrophoretic layer display layer, visual differences in color due to different viewing angles result in the loss of the advantage of such an electronic paper without an observation angle. Therefore, the inventors of the present invention have found that the display brightness and the viewing angle are improved by directly laminating the microcapsule ink on the transparent electrode layer of the color filter. However, as described above, since the electrophoretic display panel displays characters or images by reflected light, the light passes through the coloring layer of the color filter twice, so that it is an important problem to increase the reflectance. That is, it is important to increase the proportion of the microcapsules which contribute to display in the microcapsule layer in which the microcapsules are dispersed. CITATION LIST PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT PATENT DOCUMENT The present invention has been made in view of the above problems, and an object of the invention is to provide a display medium panel of a color electrophoresis type, which is a display medium of a microcapsule type electrophoresis type which is displayed in a multicolor display. In the panel, the display brightness is excellent, the problem of narrowing of the viewing angle is improved, and the display quality is excellent. The inventors of the present invention have earnestly studied the above problems, and have found that by directly laminating the microcapsule ink on the transparent electrode layer on the color filter layer provided on the transparent substrate on the viewing side, it is possible to improve display brightness and In addition, by adjusting the particle size distribution of the microcapsules of the formed microcapsule layer to a certain range, it is possible to obtain a multicolor display panel having high white reflectance and low density unevenness, thereby improving image quality, thereby completing the present invention. . That is, the invention according to claim 1 of the present invention is a display medium panel of a color electrophoresis type, which is a transparent substrate 'color filter layer, a transparent electrode layer, a microcapsule layer, a binder layer, a multi-color display panel in which a back electrode sheet is laminated in this order, wherein the microcapsule layer is directly laminated on the transparent electrode layer, and the microcapsule layer is formed by dispersing microcapsules in an adhesive resin, and the microcapsules are sealed in a transparent The dispersion obtained by dispersing the electrophoretic particles in the dispersion medium changes the optical reflection property by changing the electric field generated by applying a voltage, and the back electrode plate is an electrode plate formed by disposing a pixel electrode on the substrate, and is characterized by ' In the state where the particle diameter of the microcapsules in the microcapsule layer is observed from the viewing side, the average particle diameter in the direction of 201237528 is defined as X, and the average particle diameter in the direction orthogonal thereto is defined as Y. Has the following distribution. The average particle diameter is X = 35 to 45 μm, and the proportion of the microcapsules having a particle diameter of Χι (Χ-2〇μπ〇 or more and the particle diameter Χ2 (Χ + 2〇μηη) is 80% or more, and the particle diameter is insufficient. The number of microcapsules of Χι(Χ-20μιη) is less than 20%' The number of microcapsules exceeding the particle size Χ2 (Χ + 20μιη) is less than 5%. In addition, the average particle diameter is Υ = 35~45μηη, in the particle size Yi (Y -2〇Pm) The number of microcapsules above and below the particle size Υ2 (Υ + 20μηχ) occupies more than 80%, and the number of microcapsules less than the particle size YjYdOpm) is less than 20% ' exceeds the particle size Υ2(Υ + 20μιη) The number of microcapsules is less than 5%. According to a second aspect of the invention, the display medium panel of the color electrophoresis system according to the first aspect is characterized in that the electrophoretic particle is a particle having two different surface charges, one of which is coloring. Particles, the other is white particles. According to a third aspect of the invention, the display medium panel of the color electrophoresis system according to the first aspect is characterized in that the film thickness of the color filter layer is 0_5 to 2·0 μm. Within the range of 'display pixels within the pixel and within the pixel (difference in film thickness) is 0 · 3 or less 'the adjacent pixels do not overlap, and the top edge of each pixel is within 5.0μηι from the pixel boundary." The display medium panel of the color electrophoresis system according to the first aspect of the present invention is characterized in that, in the state in which the microcapsule layer is viewed from the cross-sectional direction of the display panel, the foregoing 8 - 201237528 The thickness of the microcapsule layer is a thickness equal to or less than the above-described average particle diameter X or the above-mentioned average particle diameter Y, and is 0.8 Å or 0.8 Å or more. EFFECTS OF THE INVENTION In the display medium panel of the microcapsule-type electrophoresis type, the surface of the microcapsule, that is, the reflecting surface, is closely adhered to the side of the transparent electrode layer on the viewing side, thereby improving the brightness and image quality. In the color media type display medium panel of the present invention, the microcapsule layer is directly formed on the transparent electrode layer provided on the color filter layer having high smoothness, and the microcapsule is easily uniformly applied as a display surface. The distance between the microcapsule layer and the color filter layer is very close, and a multicolor display panel with improved image quality can be obtained. Further, a multicolor display panel having a small color unevenness is obtained, and this color density unevenness is caused by a difference in film thickness of the color filter layer caused by the reflection type and the light second. Further, in the display medium panel of the color electrophoresis system of the present invention, by making the particle diameter of the microcapsules in the microcapsule layer into the particle size distribution in the above specific range, it is possible to obtain a coating suitability of the microcapsule ink which is excellent and less uneven. Coating film. Further, the state in which it is suspended in the adhesive resin or the multi-state deposited on the side of the binder layer is less than the distance from the transparent electrode layer, and the reflecting surface of most of the microcapsules is in close contact with the transparent electrode layer on the viewing side. On the other side, in accordance with the smoothness of the color filter described above, there is no unevenness in the display screen and in each pixel, and the display luminance is improved with a high reflectance, and an excellent display color can be obtained. Further, the thickness of the microcapsule layer of the color electrophoresis system of the present invention is equal to or smaller than the average particle diameter X or more, and is not less than O.sx, · O.SYi. In other words, the thickness direction is crushed to some extent, and the adjacent micro-capsules are not uniform in the movement distance of the electrophoretic particles, so that the electric field change is excellent in driving and responsiveness. In addition, compared with the display panel of the color filter which is separately manufactured, in the structure of the present invention, there is no unnecessary reflection light such as a binder between the filter layers by the minimum layer. , the display board is higher. In addition, regarding the display and color difference of the microcapsule layer observed due to the separation of the color filters, the micro-capsules are brought close to the color filter to the aforementioned visual difference, and the viewing angle is not narrowed. An embodiment of the display medium of the color electrophoresis system of the present invention will be described in detail below. Fig. 1 is a schematic view for explaining a configuration example of an electrophoretic display medium panel according to the present invention, which is an enlarged cross section. As shown, the display medium (1), the color filter layer (2), the transparent electrode layer (4), and the display medium panel of the color electrophoresis system of the present invention have the same particle diameter Y or are large microcapsules. The microcapsules are densely overlapped and interfered with each other, and high display performance is caused by application of a voltage. The present microcapsule layer and the color layer formed by the substrate are offset from the color of the color filter of the prior art display layer and the microcapsule layer by the microcapsule layer, so that it is not observed to be narrow. The body panel is based on a color sketch of one embodiment thereof, and the second figure is a panel of the first substrate and the second figure, which is a transparent substrate microcapsule layer (10), a sticky-10-201237528 layer (16), and a back surface. The display plate is formed by sequentially laminating electrode plates (4 turns), and the microcapsule layer (10) is directly laminated on the transparent electrode layer (4), and the microcapsule layer (1) is used to disperse the microcapsules (5) to the adhesive resin. The microcapsule (5) formed in (11) is sealed with a dispersion liquid obtained by dispersing electrophoretic particles of colored particles (6) and white particles (7) in a transparent dispersion medium 8, and the microcapsules are borrowed. The electric field generated by the applied voltage changes to change the optical reflection property, and the back electrode plate (40) is formed by arranging the pixel electrode (30) on the back substrate (50). Further, although not shown, a surface smoothing layer coated with only an adhesive resin for reducing the unevenness of the microcapsules (5) may be provided on the microcapsule layer (10) as needed. As the transparent substrate 1, a glass plate such as soda lime glass, low alkali borosilicate glass or alkali-free aluminum borosilicate glass, and polyethylene terephthalate (PET) and polycarbonate, polyphthalate can be used. A resin sheet, film or sheet of an amine, polyethylene naphthalate, polyether oxime, acrylic resin, polyvinyl chloride or the like. In the color media type display medium panel of the present invention, the planar pattern shape of the color filter layer (2) is not particularly limited, and a suitable shape such as a fine band (striped) filter segment can be suitably used. The filter segments are configured in parallel or in a crosswise arrangement, or are arranged in an array in which the fine filter segments are vertically and horizontally fixed. For example, it is not limited to the use of a pixel structure in which RGBW is combined in a large amount as shown in Fig. 5. A plurality of coloring patterns are provided in the color filter layer (2) used in the present invention, and colored pixels are disposed in the image regions. The colored pixels are colored with transmitted light on each pixel, and are generally arranged in red (R), green (G), and blue (B) colors corresponding to the three primary colors of light. 201237528 colors 'or yellow (Υ), magenta The colored pixels of the three primary colors of (Μ) and cyan (c). Further, 'herein' is a transparent resin used in a light-transmissive film or the like, and is used in combination with colored pixels in order to utilize more reflected light and increase brightness, and a color filter constituting the display medium panel of the color electrophoresis type of the present invention. In the layer 'do not use the ordinary black matrix. In the color media type display medium panel of the present invention, the cross-sectional shape of the color filter layer (2) is adjusted to a constant shape according to the coating suitability and image display properties of the microcapsule ink as shown in Fig. 4 . The film thickness of the color filter layer is in the range of 0.5 to 2.0 μm, preferably 0.7 to 1. 3 μm. In the multicolor display panel of the present invention, since the light is twice passed through the color filter layer, a coloring resin having a color property higher than that of the transmissive type is used in order to secure the brightness. When the film thickness is less than 0.5 μm, the necessary coloring concentration and adhesion to a transparent substrate cannot be selected in a balanced manner. Further, when the film thickness exceeds 2.0 μm, there is a problem that the film thickness change in development or the like cannot be suppressed. The level difference (film thickness difference) between pixels and pixels in the display screen is within 0·3 μηι, preferably Ο.ΐμπι. If the level difference between the pixels exceeds 〇.3 μιη, it is confirmed that there is a difference in color density, or unevenness in the surface of the microcapsule ink is applied, which may affect image display. The difference in film thickness can be controlled by the composition of the resist ink, exposure conditions, development conditions, and the like. In addition, in a color filter for a liquid crystal display panel using a backlight, in order to improve contrast and avoid color mixing, a black matrix (ΒΜ) is used between each pixel pattern, and when ΒΜ is not used, in order to avoid light leakage, adjacent The pixels overlap. Therefore, the edge of the pixel protrudes, and when the height thereof exceeds -12-201237528 〇.3μπι, the microcapsule ink is deviated, which affects the uniformity of the coated surface. Therefore, for the color filter of the present invention, pixels do not overlap each other. As shown in Fig. 4, the final final cross-sectional shape of each pixel is usually trapezoidal, and the adjacent pixels are not overlapped by the bottom edge contact or slightly deviated, and the top edge of each pixel of the trapezoid is separated from the pixel. The boundary is within 5 · 0 μηι, preferably within 3 · 5 μιη. By forming such a cross-sectional shape, it is possible to obtain a display panel in which the pixels are not protruded and the microcapsule ink is applied without deflection, and generation of image unevenness capable of seeing surface tortuosity can be suppressed, and utilization of reflected light can be suppressed. Good efficiency and high brightness. In the production of the color filter layer, a coloring photosensitive resin or a transparent photosensitive resin formed by dispersing a coloring agent such as a pigment or a dye on a photosensitive resin is generally used, and the glass is applied by spin coating or spin coating. The substrate is coated to a uniform thickness, and after drying to remove the remaining solvent, the resist film is irradiated with an ultrahigh pressure mercury lamp by a photolithography method by a photomask of a desired shape by proximity exposure (proximity exposure) or the like. The active energy ray, curing (negative type) or increasing the alkali solubility (positive type), removing the dissolved portion such as the ruthenium solution, thereby performing development and post-baking, and repeating the necessary number of such operations. Further, in the present invention, the above production method is not particularly limited. Then, the surface of the color filter layer (2) is honed and planarized as needed, and then a transparent electrode layer (4) is provided. The material which can be used as the transparent electrode material is, for example, a transparent conductive oxide such as indium oxide, tin oxide or zinc oxide. The transparent electrode can be formed by a conventional technique such as a vapor deposition method, a sputtering method, or a CVD method. -13- 201237528 The following is a brief description of the principle of display of a color filter with microcapsules. The color filter with microcapsules constitutes a display medium panel of the color electrophoresis mode of the present invention. As shown in Fig. 2, the pixel electrode (30) on the back substrate (50) is connected to a switching element (not shown) of each pixel electrode, and a positive and negative voltage can be applied between the pixel electrode (30) and the transparent electrode layer (4). In order to display an image, usually, the pixel electrode (30) is connected to a power supply of an active matrix type driving circuit structure. If a voltage is applied to the pixel electrode (30), the electric field applied to the microcapsule layer (1〇) changes. When the pixel electrode (30) is a positive electrode, the negatively charged particles in the microcapsule (5) move toward the pixel electrode (30) side on the back side, and the positively charged particles move to the front side of the transparent electrode layer (4). Similarly, if the pixel electrode (30) is a negative electrode, the positively charged particles move to the pixel electrode side, and the negatively charged particles move toward the transparent electrode layer (4) side. Here, for example, it is assumed that the black particles are positively charged, and the white particles are negatively charged, the display color is the color of the particles moving toward the front transparent electrode layer (4) side, and the light from the observation side is reflected thereon, and the reflected light is reflected by The colored pattern of the color filter layer can display the desired text or image in color. Next, the materials and members used in the display medium panel of the color electrophoresis system of the present invention will be further described. The microcapsule (5) used in the formation of the color filter with microcapsules is composed of a colored frit (6), white particles (7), a transparent dispersion medium (8), and a microcapsule shell (9). -14- 201237528 In general, the microcapsules used in the microcapsule-type electrophoretic display panel are refined by sieving or specific gravity separation, and the average particle diameter is 3 〇 to 100 μπι, in addition, the average particle size relative to the capsule. The ratio of the diameter of the microcapsules having a particle diameter within 1 〇μ«ι is at least 50%. In the electrophoretic display medium panel of the present invention, as shown in Fig. 3(a), the average particle diameter 1 in an arbitrary direction is defined in a state where the particle diameter of the microcapsules in the microcapsule layer is observed from the viewing side. When X is defined as Υ in the direction orthogonal to X, as shown in the first example of the state shown in Fig. 3(b), the following particle size distribution is obtained. That is, the average particle size is Χ = 35~45μηη, particle size XJXdOpm. The ratio of the number of microcapsules below the particle size Χ2 (Χ + 20μιη) is more than 80%, and the particle size is less than Χ^Χ^Ομιη) The number of microcapsules is less than 20% 'the number of microcapsules exceeding the particle size Χ 2 (Χ + 20 μιη) is less than 5%. In addition, the average particle size is Υ=35 ～45μηη, the particle size ΥΚΥ^Ομηι) is larger than the particle size Υ2(Υ + 20μηα). The number of microcapsules below 80% or more 'and the particle size YjYdOpm' The number of microcapsules exceeding the particle size 丫2 (丫+20b!11) is less than 3%. The above particle size distribution is a state in which the panel is viewed from the viewing side, and the microcapsules in the microcapsule layer as seen from the lateral direction are formed in an elliptical shape which is slightly deformed in the vertical direction. As the microcapsule dispersion, an aqueous solvent such as an alcohol is used, and if there is no particular problem, water is used. As the dispersion medium (8), an insulating liquid which can positively and stably charge charged particles, that is, an organic solvent which is substantially insoluble in water, is selected as -15-201237528. For example, a long-chain alcohol solvent such as lauryl alcohol or undecyl alcohol, a polycarbone such as dibutyl ketone or methyl isobutyl ketone, or an aliphatic hydrocarbon such as pentane, hexane or octane may be mentioned. Alicyclic hydrocarbons such as hexane and methylcyclohexane, benzene, toluene, xylene, hexylbenzene, butylbenzene, octylbenzene, nonylbenzene, mercaptobenzene, undecylbenzene, dodecylbenzene An aromatic hydrocarbon such as benzene having a long-chain alkyl group such as tridecylbenzene or tetradecylbenzene, or a halogenated hydrocarbon such as dichloromethane, chloroform, carbon tetrachloride or 1,2-dichloroethane; Any single component of various oils such as olive oil or a mixture thereof. In the black electrophoretic particles of the colored particles (6), in addition to black pigments such as aniline black and carbon black, fine powders such as glass or resin, and composites thereof may be used. Further, in the multicolor display panel of the present invention which performs multicolor display by a color filter, black particles of carbon black are usually used. Further, as the white electrophoretic particles of the white particles (7), a conventional white inorganic pigment such as titanium oxide, ceria, alumina or zinc oxide, an organic compound such as a vinyl acetate emulsion, or a composite thereof may be used. In addition, the colored particles (6) and the white particles (7) can be treated with various surfactants, dispersants, organic and inorganic compounds, metals, and the like as needed, thereby imparting not only a desired surface charge but also a desired surface charge. The dispersion stability in the transparent dispersion medium (8) is improved. The dispersion A in which the colored particles (6) and the white particles (7) are dispersed in the transparent dispersion medium (8) is subjected to a phase separation method such as a hybrid coacervation method, a surface polymerization method, an in-situ polymerization method, and a dissolution dispersion. A conventional method such as a cooling method is enclosed in the microcapsules. The shell (9) of the microcapsule is, for example, a flexible film such as rubber or gelatin which is elastic and can be adapted to the necessary deformation. The material for forming the microcapsules is preferably a material that sufficiently transmits light, and specific examples thereof include urea-formaldehyde resin, melamine-formaldehyde resin, polyester resin, polyurethane resin, polyethylene resin, and polyphenylene. Vinyl resin, polyamide resin, acrylate resin, methacrylate resin, vinyl acetate resin, rubber, gelatin, and the like. They may be used alone or in combination of two or more. The microcapsule dispersion of the microcapsules having the particle size distribution dispersed therein is mixed with a thickener, a surfactant, and an adhesive resin (11) to prepare a microcapsule ink. In the adhesive resin (11) of the microcapsule ink, a dielectric resin such as polylactic acid, phenol resin, polypropylene resin, acrylic resin, or polyurethane resin is used. As described above, the microcapsule layer (10) is a transparent substrate (1) formed of a glass substrate or a resin substrate in which the color filter layer (2) and the transparent electrode layer (4) are provided in advance. The transparent electrode layer (4) is directly coated and formed. The coating is performed by a screen printing method, a micro gravure coater, a contact roll coater, a comma applicator, a slit coater, a bar coater, a curtain coater, etc., and can be preferably used in the present invention. Slot die coater. Since the microcapsule layer (10) thus formed has a concave shape on the surface, it is difficult to make the distance between the electrodes sandwiching the microcapsule constant. Therefore, it is preferred to apply a surface smoothing ink on the microcapsule layer (10) to form a surface smoothing layer. By forming the surface smoothing layer, the bonding agent can be directly coated on the surface smoothing layer. This can be avoided. If there is no surface smoothing layer, the adhesive is directly applied, and the uncoated bit 201237528 such as pinhole is placed on the microcapsule layer (10), and the adhesive directly contacts the transparent electrode layer on the side of the color filter ( 4), the dielectric constant changes, and it is difficult to apply a voltage to the microcapsules, and the result is unclear. The surface smoothing ink is a resin-former which disperses as an adhesive in a solvent. The adhesive component is preferably a resin having the same dielectric constant as the adhesive component used in the adhesive resin component or the adhesive layer used in the microcapsule ink. In particular, it is the same as the adhesive resin component used in the microcapsule ink and the adhesive layer, and the same as the adhesive resin component of the surface smoothing ink. When a resin having a different dielectric constant is used, a resin having a different dielectric constant is laminated between the electrodes, and the thickness of each resin is different depending on the size of the microcapsules present in the portion. Thus, the voltage applied to the microcapsules is difficult to be uniform across the entire screen area due to the difference in dielectric constant of each resin. As the solvent for the surface smoothing ink, those used in the microcapsule ink may be used, and an aqueous solvent such as another alcohol may be used. The application of the surface smoothing ink is applied by a coating device such as a curtain coater or a slit die coater. The coating method of cutting the coating liquid such as blade coating cannot be used because the microcapsules in the microcapsule layer are broken. The thickness of the surface smoothing layer is preferably from 1 to 30 μm. When it is below ΙΟμηη, the unevenness of the surface of the microcapsule is not smooth. On the other hand, when it is 30 μη or more, the distance between the electrodes is wide, which causes the driving voltage to rise. The surface smoothing layer is formed as above to sufficiently evaporate the solvent to form a color filter with microcapsules. The colored pattern (pixel) and the back electrode of the color filter are sandwiched between the color filter with the microcapsules -18-201237528 and the back surface of the pixel electrode disposed on the back substrate. The color media electrophoretic display medium panel is completed by laminating the pole positions while overlapping. The material which can be used as the adhesive is preferably a synthetic resin adhesive such as a polyurethane dye or an acrylic resin adhesive. An adhesive using a high dielectric resin. The adhesive may also be directly applied to the above microcapsule layer or image. In the manufacturing method of the present invention, it is preferable to apply and adhere to the above-mentioned micro-ink on the resin-coated substrate on which the enamel film and the resin-based conductive layer are formed. The binder of the same composition of the resin is used to form a sticky. By using a binder which is used in the adhesive resin used in the microcapsule ink, the following advantages can be mentioned: the resin-improving box is difficult to be peeled off' and since the dielectric constant is similar, the voltage applied to the capsule is easily applied. Certainly inside. In addition, by using a conductive grease-releasing substrate between the ruthenium film and the resin substrate, a layered sheet can be laminated on a color filter with microcapsules to form a multilayer substrate, that is, a color filter electrophoretic display panel is driven for evaluation. , quality confirmation. Further, the conductivity here does not require transparency. Therefore, it may be a film formed by vapor deposition or electrodeposition to form copper, a film, and a film formed by coating a conductive polymer. The pixel of the electrode plate of the present invention is an ester-based viscous electrode. The electrode plate of the inter-plate-shaped capsule oil-like agent is also sturdy, and the viscous layer of the above-mentioned viscous layer of the micro-adhesive layer is made of aluminum or the like. EXAMPLES Hereinafter, specific examples of the invention will be described. <Example 1> An oxidized powder (white particles) having an average particle diameter of 3 μm on the surface and a carbon black powder having a flat diameter of 4 μm by surface treatment with alkyltrimethylammonium chloride (black particles) ) Disperse in a transparent dispersion medium of tetrachloroethylene to obtain a dispersion. In this case, the white particles are negatively charged with positive black particles. Then, 'solvent gelatin and sodium polystyrene sulfonate were dissolved in water, and the preparation liquid was mixed with dispersion A. After the liquid temperature was adjusted to 40 ° C, the mixture was stirred while being kept warm to obtain a Ο/W emulsion. liquid. Then, 'the obtained 0/W emulsion and an aqueous solution of arylene dissolved in water were mixed at 40 ° C using a disperser, and the pH of the solution was adjusted to acetic acid using a solution temperature of 40 ° C. 4. A microcapsule having gelatin-arab gum as a shell material is formed by a coacervation method. Then, 'after reducing the liquid temperature to 5 °C, adding 37 mass% of Fuma solution' to solidify the wall material of the microcapsule shell to obtain a dispersion of dispersed white granulated titanium particles) and black particles (carbon black particles) The microcapsules obtained by A are sieved to obtain the microcapsules thus obtained, so that the particle size is uniform so that the particle diameter is 40 μm, and the particle size is 20 μm or more to the particle diameter of 60 μm or less. The number of the particles is 80%, and the particle diameter of less than 20 μm is small. The ratio of the capsules is 20%, and the ratio of the microcapsules having a particle diameter of 60 μm or more is less than 5%. Titanium powder homogenized olefin, water-soluble liquid holding tree to maintain composite forest solubles (the ratio of oxygen averaging ' is less than -20-201237528 Next, the micro-capsules with the same particle size as the solid content 'adjust the solid content 4〇 An aqueous dispersion of microcapsules of % by mass. The aqueous dispersion, a polyurethane-based adhesive having a solid content of 25% by mass (CP-7805, manufactured by DIC Corporation), a surfactant, and an increase The thickener is mixed with pure water to produce a microcapsule ink. On the other hand, a color filter is produced by the following method. The parts described herein are all parts by mass. First, 'cyclohexanone is used as a solvent to make 50 parts of a Acrylic resin was prepared by copolymerization of butyl acrylate, 20 parts of methyl methacrylate, and 30 parts of acrylic acid. 25 parts of the acrylic resin was used to prepare an acrylic resin solution in a ratio of 47 parts by solvent, and 20 parts of red pigment was mixed therein ( Pigment Red 2 2) 'Disperse by bead milling for 1 hour. Then, 4 parts of dipentaerythritol as a photosensitive monomer, 4 parts of hexaacrylate, and 0.3 parts as a photopolymerization initiator were mixed by a disperser. Preparation of a red photoresist material by bis(2,4,6-trimethylbenzylidene)-phenylphosphine oxide. The red photoresist material was spin-coated to a transparent glass substrate having a thickness of 400 mm and a width of 320 mmi and a thickness of 0.7 mm. The film was allowed to stand at room temperature for 5 minutes to smooth the surface of the film, and then dried at 70 ° C for 20 minutes to form a red photoresist layer. Then, 'the red resist layer was formed as shown in Fig. 5(b). The 6-sided display screen is a 6-type display panel with a vertical length of 97.28 mmx and a width of 128.08 mm. As shown in Fig. 5(a), 'the sub-pixel size is 151μηιχ153μηη, and the pixel size composed of RGBW is 302μηι> The mask of the pattern obtained by repeating the pixel of 306 μm τι is disposed at the position of red exposure, and is closely exposed by an ultrahigh pressure mercury lamp, -2 1- 201237528 at an exposure amount of 150 m / cm 2 . After the exposure, a 1% sodium carbonate aqueous solution having a temperature of 20 ° C was sprayed at a discharge pressure of 1 Kg/cm 2 , and spray development was carried out for 20 seconds to remove the unexposed portion to expose the glass substrate. The glass substrate after the development treatment was dried, and then heated at 2300 ° C for 1 hour to carry out a solid film treatment to obtain a red pattern having a film thickness of 1.1 μm. Next, on the glass substrate on which the red pattern was formed, a green photoresist material was produced using a green pigment (Pigment Green 7) as a color material and a red photoresist as described above, and a green photoresist layer was formed using the material. Then, the same mask movement as described above was placed at a position where the green pattern was formed, and the exposure was closely adhered under the condition of an exposure amount of 200 mJ/cm 2 . After the exposure, a 1% sodium carbonate aqueous solution having a mist temperature of 20 ° C was sprayed at a discharge pressure of IKg/cm 2 , and spray development was carried out for 30 seconds to remove the unexposed portion to expose the glass substrate. After the glass substrate after the development treatment was dried, the mixture was heated at 230 ° C for 1 hour in the same manner as above to carry out a solid film treatment to obtain a green pattern having a film thickness of 1.2 μm. Then, similarly to the above, a blue pigment (Pigment Blue 15:6) was used as the color material, and a blue photoresist layer was formed using the blue photoresist material. Then, the same mask as described above was moved at a position where a blue pattern was formed, and the film was adhered and exposed to develop, and the unexposed portion was removed to expose the glass substrate. After the glass substrate after the development treatment was dried, the mixture was heated at 230 ° C for 1 hour in the same manner as above to carry out a solid film treatment to obtain a blue pattern having a film thickness of 1 · 1 μm. -22-201237528 Next, a photosensitive acrylic resin from which only the coloring pigment was removed was subjected to the same operation as described above to obtain a W (transparent) pattern having a film thickness of 1.1 μm. Each of the sub-pixels of RGB W has a film thickness difference of at most Ο.ΐμπι, and there is no overlap between adjacent pixels ’ and is formed in contact with the bottom edge, and even if it is separated, the maximum separation is 以下.Ομηη or less. In addition, the top edge is within 3·5 μm of the pixel boundary. Thus, a substrate having a six-sided display screen of 97.28 mm in length and 128.08 mm in width was formed on the glass substrate, and a sub-pixel size of 151 μm χ 153 μm and a pixel size of RGBW of 302 μm were formed. <3() 6 μιη pattern of color filter layer. Next, without performing honing treatment and overcoating, a transparent electrode layer made of ruthenium having a thickness of 15 Onm was formed on the entire surface of the color filter layer and the exposed glass substrate by a spatula method. Next, the above microcapsule ink was directly applied onto the transparent electrode layer on the transparent glass substrate on which the color filter layer was formed, using a slit die coater. The coating was carried out by extruding a mold so that the thickness of the microcapsule layer was 40 μm, the microcapsules did not overlap, and the microcapsules having a large particle diameter were pressed into the microcapsule layer. After coating, it was dried at 60 ° C for 1 〇 to obtain a color filter with microcapsules. Then, on the microcapsule layer of the above-mentioned microcapsule-containing color filter, a polyurethane-based adhesive having a solid content of 25% by mass (CP-705 0, DIC shares) was overlaid and applied using a slit die coater. Co., Ltd. manufactured as a surface smoothing ink, and dried to obtain a microcapsule color filter having a surface smooth layer and having a thickness of ΙΟμηη. -23- 201237528 In addition, one side of the polyethylene terephthalate sheet was vapor-deposited as 100 nm thick aluminum, and then a bismuth-based strip was obtained on the obtained 50 μm thick polyethylene terephthalate. On the peeled side of the ester sheet, a 25 μm thick polyester-polyurethane-based adhesive and a cake were applied. Next, the above-mentioned adhesive sheet was bonded to the color of the microcapsules having the surface smoothing layer to obtain a 6-type display color filter electrophoretic display type front panel having 6 faces. In this state, a voltage is applied to the transmissive layer and the conductive layer to confirm the driving of the microcapsule layer. Next, the color filter electrophoretic display front panel, the adhesive layer of the ester-polyurethane-based adhesive, and the 50 μπ thick polyethylene terephthalate sheet separated from the coating layer are peeled off. And superimposed on the positioning marks of the color chips, and the display screens of the six sides are respectively sliced by the pressure of 0.5 0 在 on the pixel electrode surface of the back surface electrode plate of the 6-type 6-face corresponding to the color filter. A display medium panel of the invention, wherein the back electrode sheet has a pixel electrode made of ITO as a TFT glass substrate, and the ITO is an active matrix type driving circuit structure formed of a film transistor. On each of the display panels of 1, a voltage of about ± 15 V was applied between the front and back pixel electrodes by a standard voltage generating device (manufactured by Yokogawa Electric Co., Ltd.) to evaluate the actual quality. In addition, the color difference meter CR-400 (Konica Minolta conductive layer coating, the coated surface of the viscous filter surface of the color clear electrode leaves the polyether stripping filter with the bonding, the color electric substrate uses the thin ITO Current production electrode display system -24-201237528 造) 'Measurement of color display (when displayed in white) and reflectance in black display 'Contrast = color (white) reflectance / black reflectance Evaluate contrast. Furthermore, the visual brightness L* was measured by the same device. As a result, the display panel of the first embodiment has a white reflectance of 6% of the display panels of 23%', and the multi-color display can be realized by an excellent contrast ratio of ΐ2:1 which is equivalent to a single color. Image unevenness due to uneven coating of the microcapsule ink was not detected and the color density between the six panels was different. In addition, any of the display panels has no color irregularity when viewed from the front and the lateral direction, and can also improve the color parallax caused by the visual angle, and can be excellently displayed as an electronic paper. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic cross-sectional view showing an embodiment of a display medium panel of a color electrophoresis system according to the present invention. Fig. 2 is a schematic structural view showing an embodiment of a display medium panel of the color electrophoresis system of the present invention, taken along an enlarged cross section. Fig. 3(a) and (b) are diagrams showing the particle size distribution of the particle diameter of the microcapsules in the microcapsule layer of the present invention. Fig. 4 is a schematic cross-sectional view showing an example of a color filter of a display medium panel of the color electrophoresis type of the present invention. Figs. 5(a) and 5(b) are enlarged plan explanatory views showing an embodiment of a color filter of a display medium panel of the color electrophoresis type of the present invention. -25- 201237528 [Description of main component symbols] 1 Transparent substrate 2 Color filter layer 4 Transparent electrode layer 5 Microcapsule 6 Coloring scorpion 7 White industry scorpion 8 Transparent dispersion medium 9 Microcapsule shell 10 Microcapsule layer 11 Bonding Resin 16 adhesive layer 3 0 pixel electrode 50 back substrate -26